No obi. The cover has minor wear and tear. There is a fold on the upper corner of one page. Otherwise, it is in good condition. ◎ Ships from "Kanto (Saitama)" ◎ Ships within 24 hours of purchase ◎ "All items are anonymously shipped with free shipping" (Trackable shipping method where the seller does not know the address, name, or phone number, and the seller covers the shipping cost) ◎ "There are no writings unless otherwise noted," so please rest assured. (Books with writings will have the extent of the writing described in the product description, such as "writing on page ○.") ◎ If there are any defects not mentioned after purchase, please contact us, and we will address them. "Principles of System Design Useful in the Field: Object-Oriented Practical Techniques for Making Changes Easy and Safe" Toru Masuda Price: ¥2940 #ToruMasuda #Toru_Masuda #book #electricity/machinery/electronic communication